Product Description: Keepour 4K HDMI Cables incorporate the most advanced technologies in cable engineering, construction, and materials to ensure maximum performance from your premium audio and video devices Specifications: Precision-machined, aluminum alloy shell (3 micro on shell and 10 micro on pins) connector resists corrosion and ensures maximum signal transmission Heavy OFC (Oxygen Free Copper) conductor optimizes conductivity and reliability High-density, multi-shielding rejects EMI/RFI interference and noise UL rated PVC jacket is Soft, reliable, allows installation behind walls, for maximum flexibility during installation,from damage and makes in-wall pulling easier Features: Ultra-high speed, supports bandwidth on 18 Gbps High-resolution and refresh rate, supports 60 Hz @60fps Pure digital video, supports 4K Ultra-HD Multi-channel audio connection, delivers a stunning immersive surround sound This cable also works with: ? ANY device bearing the HDMI logo. ? ALL revisions of HDMI v2.0, v1.4 & v1.3